Refinement Database

Database on Refinement of Housing, Husbandry, Care, and Use of Animals in Research

This database, created in 2000, is updated every four months with newly published scientific articles, books, and other publications related to improving or safeguarding the welfare of animals used in research.

Tips for using the database:

  • This landing page displays all of the publications in the database.
  • Use the drop-down menus to filter these publications by Animal Type, Setting, and/or Topic.
  • Clicking on a parent category (e.g., Rodent) will include publications relating to all the items in that category (e.g., Chinchilla, Gerbil, Guinea Pig, etc.).
  • You may also add a keyword to further narrow your search.
  • Please note that at this time, only publications dated 2010 or later (with some exceptions) can be filtered by Animal Type and Topic, and only publications dated 2020 or later (with some exceptions) can be filtered by Setting. Most publications older than 2010 can only be searched by keyword. 
Clarke, D., Ioannou, L. 2018. Introduction of gang caging for group housed rats. Animal Technology and Welfare 17(2), 136-137.

Using an existing gang cage designed for ferrets, we developed a version that would be suitable for housing rats. Caging consisted of 3 floors with a combined floor area of 11620m, connected by 2 ladders...

van Wijk, H., Crossman, L., Adjin-Tettey, G. et al. 2018. Advances in animal welfare and scientific outcomes of the bile duct cannulated rat model utilised in ADME studies. Animal Technology and Welfare 17(1), 64-67.

Since rats lack a gall bladder, they are an ideal model for investigating continuous biliary excretion and biotransformation. The design and implementation of a modified tail cuff and cannula system introduced at Covance permits the...

Jongman, E.C., Butler, K.L., Hemsworth, P.H. 2018. The effects of kennel size and exercise on the behaviour and stress physiology of individually-housed greyhounds. Applied Animal Behaviour Science 199, 29-34.

Greyhounds are routinely bred and managed for racing and are usually housed in individual kennels. To address the question of whether greyhounds would benefit from an increase in the minimum kennel size specified in the...

Neal Webb, S. J., Hau, J., Schapiro, S. J. 2018. A comparison of activity patterns of captive chimpanzees (Pan troglodytes) housed in primadomes™ or corrals. American Journal of Primatology 80(S1), 45-46 (40th Meeting of the American Society of Primatologists Scientific Program, Abstract #141).

Primadomes™ and corrals, two types of housing options available to captive chimpanzees, differ in several physical features, including closed (primadomes™) or open (corrals) tops, mesh (primadomes™) or concrete (corrals) walls, and available space per animal...

Tjärnström, E., Weber, E. M., Hultgren, J. et al. 2018. Emotions and ethical decision-making in animal ethics committees. Animals 8(10), 181.

Ethical evaluation of projects involving animal testing is mandatory within the EU and other countries. However, the evaluation process has been subject to criticism, e.g., that the committees are not balanced or democratic enough and...

Koch V. W. 2018. Preventing adverse events at research facilities. JAALAS 57(6), 660–669.

In this article, adverse events are defined as events that lead to significant injury or illness, unrelieved pain or distress, or the death of an animal, excluding those caused by IACUC-approved research procedures. The ability...

Koistinen, T., Raatikainen, S., Sepponen, J. et al. 2018. Resting preferences and welfare of Finnraccoon (Nyctereutes procyonoides ussuriensis) females housed in various housing conditions in winter. Applied Animal Behaviour Science 207, 129-137.

Raccoon dog (Nyctereutes procyonoides ussuriensis) is the only canid species using facultative passive wintering strategy. The aim of the present study is to document the behaviour and welfare of the farmed variant of the species...

Freret-Meurer, N. V., Alves, M. A. S. 2018. Personality in the longsnout seahorse, Hippocampus reidi Ginsburg, 1933: Are males shyer than females? Behavioural Processes 157, 106-110.

Individual responses, particularly based on personality, can have important consequences for individual fitness, based upon success in exploring new habitats, feeding on novel foods, and aggressiveness in competitive interactions. We conducted laboratory experiments to analyze...

Lush, J., Ijichi, C. 2018. A preliminary investigation into personality and pain in dogs. Journal of Veterinary Behavior 24, 62-68.

Adherence to basic animal welfare standards involves effective monitoring and control of pain, especially in a veterinary setting. Assessment relies on behavioral and physiological indicators. However, individual differences in physiology mediate consistent individual differences in...

Byrd, R., Boyd, S., Buckmaster, C. 2018. Rat thunder jacket— A zen experience. Laboratory Animal Science Professional 6(3) (September), 55-57.

Germ-free rats are fairly uncommon, relative to germ-free mice, and restraining these animals safely and effectively for compound administration and blood collection can be challenging. There are many commercially available varieties of restraint devices, but...

Darbyshire, A. K., Salleng, K., Chen,P. 2018. The shocking lives of electric eels. Laboratory Animal Science Professional 6(1) (March), 14-18.

Electric eels (Electrophorus electricus) are a unique species used for behavioral research in the Vanderbilt Animal Care and Use Program. Few resources are available to describe the housing and handling of this species in captivity...

Franco, N. H., Sandøe, P., Olsson, I. A. S. 2018. Researchers’ attitudes to the 3Rs—An upturned hierarchy? PLOS ONE 13(8), e0200895.

Animal use in biomedical research is generally justified by its potential benefits to the health of humans, or other animals, or the environment. However, ethical acceptability also requires scientists to limit harm to animals in...

Deckers, N., Ruigrok, C. A., Verhoeve, H. P. et al. 2018. Comparison of pain response after subcutaneous injection of two maropitant formulations to beagle dogs. Veterinary Record Open 5(1), e000262.

The antiemetic maropitant, with metacresol as preservative (Cerenia, Zoetis), has been associated with pain after subcutaneous injection in dogs and cats. Recently, a generic formulation containing benzyl alcohol was authorised (Prevomax, Le Vet). Benzyl alcohol...

Burden, N., Kendrick, J., Knight, L. et al. 2017. Maximizing the success of bile duct cannulation studies in rats: Recommendations for best practice. Laboratory Animals 51(5), 457-464.

Bile duct cannulation (BDC) studies are usually carried out in the rat to support the absorption, distribution, metabolism and excretion profiling of novel agrochemicals and pharmaceuticals. The different aspects of these studies (e.g. surgical preparation...

Jensen, V. F. H., Mølck, A.-M., Martensson, M. et al. 2017. Assessment of implantable infusion pumps for continuous infusion of human insulin in rats: Potential for group housing. Laboratory Animals 51(3), 273-283.

Group housing is considered to be important for rats, which are highly sociable animals. Single housing may impact behaviour and levels of circulating stress hormones. Rats are typically used in the toxicological evaluation of insulin...

Miranda, A., Pego, J. M., Correia-Pinto, J. 2017. Animal facility videoendoscopic intubation station: Tips and tricks from mice to rabbits. Laboratory Animals 51(2), 204-207.

Endotracheal intubation of laboratory animals is a common procedure shared by several research fields for different purposes, such as mechanical ventilation of anaesthetized animals, instillation of cytotoxic nanoparticles, infectious agents or tumour cells for induction...

Castelhano-Carlos, M. J., Baumans, V., Sousa, N. 2017. PhenoWorld: Addressing animal welfare in a new paradigm to house and assess rat behaviour. Laboratory Animals 51(1), 36-43.

The use of animals is essential in biomedical research. The laboratory environment where the animals are housed has a major impact on them throughout their lives and influences the outcome of animal experiments. Therefore, there...

Lahvis, G. 2017. Unbridle biomedical research from the laboratory cage. eLife 6, e27438.

Many biomedical research studies use captive animals to model human health and disease. However, a surprising number of studies show that the biological systems of animals living in standard laboratory housing are abnormal. To make...

Brenneis, C., Westhof, A., Holschbach, J. et al. 2017. Automated tracking of motion and body weight for objective monitoring of rats in colony housing. JAALAS 56(1), 18-31.

Living together in large social communities within an enriched environment stimulates self-motivated activity in rats. We developed a modular housing system in which a single unit can accommodate as many as 48 rats and contains...

Barker, T. H., Bobrovskaya, L., Howarth, G. S. et al. 2017. Female rats display fewer optimistic responses in a judgment bias test in the absence of a physiological stress response. Physiology & Behavior 173, 124-131.

Metabolic cages are a type of housing used in biomedical research. Metabolic cage housing has been demonstrated to elicit behavioural and physiological changes in rodents housed within them. The nature of this effect has been...

Jones, T., Robinson, M., Leach, M. et al. 2017. Ultrasonic vocalisation as a measure of positive welfare in rats. Animal Technology and Welfare 16(2), 127-129.

Studies of animal welfare in laboratory animals have historically relied on the measurement of negative indicators rather than the assessment of positive indicators of welfare. Practical methods of welfare assessment are required to allow refinement...

Pritt, S. L., Hammer, R. E. 2017. The interplay of ethics, animal welfare, and IACUC oversight on the reproducibility of animal studies. Comparative Medicine 67(2), 101–105.

Reproducibility in animal studies has been defined as the ability of a result to be replicated through independent experiments within the same or among different laboratories. Over the past few years, much has been written...

Mulcahy, D. M. 2017. The Animal Welfare Act and the conduct and publishing of wildlife research in the United States. ILAR Journal 58(3), 371-378.

In the US, the Animal Welfare Act (AWA) and its enabling regulations (AWAR) cover all warm-blooded animals used for research, testing, experimentation, or exhibition. The only exceptions, made in the enabling regulations, are for two...

Stevens, C. H., Croft, D. P., Paull, G. C. et al. 2017. Stress and welfare in ornamental fishes: What can be learned from aquaculture? Journal of Fish Biology 91(2), 409-428.

The ornamental fish trade is estimated to handle up to 1.5 billion fishes. Transportation and handling of fishes imposes a range of stressors that can result in mortality at rates of up to 73%. Given...

Costa, D. C., Mattioli, C. C., Silva, W. S. et al. 2017. The effect of environmental colour on the growth, metabolism, physiology and skin pigmentation of the carnivorous freshwater catfish Lophiosilurus alexandri. Journal of Fish Biology 90(3), 922-935.

The growth, physiology and skin pigmentation of pacamã Lophiosilurus alexandri juveniles were evaluated in an experiment using different tank colours (white, yellow, green, blue, brown and black) over an 80-day period. The tank colours did...